Cat litter box



FIG. 1 is a perspective view of a cat litter box;

FIG. 2 is an elevational front view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is an elevational right side view thereof;

FIG. 5 is an elevational left side view thereof;

FIG. 6 is an elevational back view thereof; and,

FIG. 7 is a bottom plan view thereof. 

The ornamental design for a cat litter box, as shown and described. 